""ET TROJAN Win32/Unk.VBScript Requesting Instruction from CnC""

SID: 2027698

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_07_10, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2019_07_10

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/open?topics=s9" Depth: 15

  • Value: !"Referer|3a|"

Within:

PCRE: "/^\/open\?topics=s9[0-9]{3}$/U"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

source